Module: Abrizer::ReadAdaptations

Included in:
Canvas, Data
Defined in:
lib/abrizer/read_adaptations.rb

Instance Method Summary collapse

Instance Method Details

#find_adaptations ⇒ Object 



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# File 'lib/abrizer/read_adaptations.rb', line 32

def find_adaptations
  finder = AdaptationFinder.new(filepath: @filename)
  @adaptations = finder.adaptations
end

#read_adaptations ⇒ Object 



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# File 'lib/abrizer/read_adaptations.rb', line 4

def read_adaptations
  # Either we have a filepath to an original or we make the assumption we
  # really have an identifier instead of a filepath and we use that
  # identifier to look for an adaptations.json file. Failing finding the
  # adaptations.json file we just use the adaptations based on the
  # vp9_filepath.
  if @filepath && File.exist?(@filepath) && !File.directory?(@filepath)
    @filename = @filepath
    find_adaptations
  elsif File.exist? adaptations_filepath
    # assume we have an identifier and look up for the adaptations file
    adaptations_json = File.read adaptations_filepath
    adaptations = MultiJson.load adaptations_json
    # TODO: There ought to be a class that recreates an Adaptation instance
    # based on the adaptations.json file. For now we fake it with a
    # OpenStruct.
    @adaptations = adaptations.map do |a|
      OpenStruct.new(a)
    end
  elsif File.exist? vp9_filepath
    # assume we just got an identifier and look for the webm
    @filename = vp9_filepath
    find_adaptations
  else
    raise ReadAdaptationsError
  end
end